The 2 piece electronic cigarette is, hands down, the most efficient and convenient form of electronic cigarette, as it is only made up of a cartridge, which is replaceable, and a rechargeable battery. The atomizer is incorporated into the refill cartridge, so you’ll get a brand new atomizer every time you change your cartridge. Changing the atomizer has its advantages and disadvantages.

The advantage of the atomizer that is in the 2 piece electronic cigarette is that every time the nicotine cartridge is depleted and replaced, the atomizer gets changed as well. You’ll almost never have to worry about a malfunctioning atomizer. Additionally, you are able to switch to a cartridge that is of a different flavor even if you haven’t exhausted all the contents of the first cartridge. You can even switch back to your original cartridge by simply screwing and unscrewing these cartridges. There is no need to worry about the original flavor of the nicotine cartridge ruining your atomizer, as they are two separate components.

The 2 piece electronic cigarette has one primary disadvantage: just like inkjet printers, you are able to refill the nicotine cartridges yourself, once you buy the nicotine solution separately. However, those cartridges that have in-built sealed atomizers can make it rather difficult to refill the cartridge. It can be done, just not as conveniently.

The 2 piece electronic cigarette’s arch nemesis is the 3 piece electronic cigarette. The 3 piece electronic cigarette is made up of a nicotine cartridge, an atomizer, and a separate battery. The battery is screwed into the atomizer while the nicotine cartridge may be forced or screwed to the atomizer, where it is securely kept in place until it needs to be refilled or replaced.

The primary benefit of the 3 piece electronic cigarette is that it is very easy to refill with your own e-juice. However, these cigarettes have two major disadvantages, namely:

The nicotine solution is known to pass through the atomizer; therefore, you should replace the atomizer when you are going to switch flavors.

The atomizer of the 3 piece electronic cigarette is semi-consumable; therefore, it will need to be replaced every 6 to 12 weeks.

The 3 piece electronic cigarette may not be a bad idea for someone who wants to refill their own nicotine, but that’s all! The biggest difference, which I have not yet disclosed thus far in this article, is the drastic difference in vapor production. The 2 piece electronic cigarette will, in nearly all instances, produce much higher, thicker levels of vapor than a 3 piece design. This reason alone is worth not being able to easily refill your cartridges. Would you like to blow smoke rings? Then don’t buy a 3 piece electronic cigarette.